If you don't value your life start smoking, you'll die ten years early. Or, start drinking to excess every day, you'll die fifteen years early. Or you could love someone who doesn't love you back, you'll die every day.
One of the best feelings comes when you finally let go of your attachment to somebody who wasn't meant for you.
At some point, you have to realize that some people can stay in your heart but not in your life.
Sometimes all you can do is smile. Move on with your day, hold back the tears and pretend you're okay.
If you want to improve your life immediately, clean out your closet. Often it's what we hold onto that holds us back.